US4736184A - Direct connection potentiometer - Google Patents

Direct connection potentiometer Download PDF

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Publication number
US4736184A
US4736184A US06/799,860 US79986085A US4736184A US 4736184 A US4736184 A US 4736184A US 79986085 A US79986085 A US 79986085A US 4736184 A US4736184 A US 4736184A
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US
United States
Prior art keywords
block
front face
direct connection
electrically conductive
track
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/799,860
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English (en)
Inventor
Carlos L. Arriazu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Piher Navarra SA
Original Assignee
Piher Navarra SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Piher Navarra SA filed Critical Piher Navarra SA
Assigned to PIHER NAVARRA, S.A. reassignment PIHER NAVARRA, S.A. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LOPEZ ARRIAZU, CARLOS
Application granted granted Critical
Publication of US4736184A publication Critical patent/US4736184A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
    • H01C10/34—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path the contact or the associated conducting structure riding on collector formed as a ring or portion thereof

Definitions

  • the present invention relates to potentiometers and more particularly to an improved direct connection potentiometer.
  • the primary feature of the new potentiometer is its structural simplicity which allows the employment of automated manufacture and in consequence the automatic assembly of circuits and equipment in series production. This simplicity of construction results furthermore in a notable reduction in the cost of the component.
  • Another feature of the new potentiometer is the possibility of direct mounting within the circuit of which it is to form a part by the soldering of the circuit terminations to the potentiometer terminals which are in the form of electroconductive deposits, the absence of the classic type of terminal connectors resulting in a reduction in the dimensions of the component.
  • FIG. 1 is a front elevation view of the new variable resistance device
  • FIG. 2 is a longitudinal cross sectional view taken along the center plane line II--II of FIG. 1;
  • FIG. 3 is a transverse sectional view of the device, taken through the rotating member, on the plane III--III of FIG. 2;
  • FIG. 4 is a bottom plan view of the device looking towards the side carrying the connection surfaces.
  • variable resistance device as described consists of a track support body --1--, in the form of a modified quadrangular block of an insulating material such as alumina, the electro-resistive track --2--, on one of its faces (namely, its front face) being a serigraphic deposit (i.e. a silkscreened coating of which the extremities join into areas of silver deposition --3-- and --4--, similarly carried out, for purposes of providing the soldered connection of the potentiometer.
  • the areas --5-- and --6-- provide the juxtaposition of the conductive zones, ensuring their permanent contact despite vibration or other mechanical action.
  • the body --1-- having preferably two of its vertices bevelled, --7--, is provided on the perimetrical edge opposite these bevels, with recesses --8-- and --9--, thus forming three rectangular projections of equal size, corresponding to the areas --3-- and --4--, with a central conductive area in the form of a circular ring --10--, a extension --11-- of which is provided on the third projection, which is disposed on a site spaced from between the areas --3-- and --4-- by the recesses 8 and 9.
  • electroconductive bands extend across the perimetrical edge surface of the block 1 on the projections defined between the recesses --8-- and --9--, such that they define electro conductive areas --12--, --13-- and --14-- (see FIG. 4), which continue on the rear face of the block (see FIG. 2).
  • this potentiometer is connected to an electrical circuit (not shown) by the direct soldering of the conductive areas 12, 13 and 14, employing for this purpose machines of various types designed for the insertion and assembly of this type of component.
  • An alternative version of the device (not shown) has the conductor --10-- in connection with the metallized area --3--, eliminating the strip --11--, the potentiometer becoming a variable resistor with two connection terminations.
  • the cursor i.e. the slide of the potentiometer
  • the cursor consists of a metal element, in alpaca or in a similar alloy, discoidal as shown in figure --1-- and having a circumferential arc-shaped opening --15-- and an area in the shape of a semi-corona (i.e. a semi-circular ring) --16--, the latter having within it a curvilinear section indentation (i.e. a protrusion towards the front face of the block) --17--, designed to remain in contact with the resistive track --2--.
  • the central part of the cursor is in the form of a semi-circular section circular zone --18-- which is in continuous sliding contact with the central corona --10-- thus providing the contact between the latter with its extention --11-- and the point on the resistive track touched by the indentation --17--.
  • the operation of the cursor is carried out by direct action on the part --19-- which extends away from the front face of the block --1-- and is provided with a cutaway (i.e. notch) in the form of a U, --20--.
  • the cursor is retained in position by means of an axially positioned sleeve --21--, passing through a central hole in the block --1--, one of its extremities being flared over to form an annular flange --22-- which lodges in a recess --23-- provided in the rear face of the block --1--, the other extremity of the sleeve also being flared to form a corona --24--, retaining the cursor through its center.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adjustable Resistors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
US06/799,860 1984-11-21 1985-11-20 Direct connection potentiometer Expired - Fee Related US4736184A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1984282760U ES282760Y (es) 1984-11-21 1984-11-21 Potenciometro de conexion directa

Publications (1)

Publication Number Publication Date
US4736184A true US4736184A (en) 1988-04-05

Family

ID=8433004

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/799,860 Expired - Fee Related US4736184A (en) 1984-11-21 1985-11-20 Direct connection potentiometer

Country Status (8)

Country Link
US (1) US4736184A (de)
JP (1) JPS61166106A (de)
KR (1) KR860004317A (de)
DE (1) DE3540893A1 (de)
ES (1) ES282760Y (de)
FR (1) FR2573564B3 (de)
GB (1) GB2168541B (de)
IT (2) IT8515264V0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785278A (en) * 1986-10-01 1988-11-15 Murata Manufacturing Co., Ltd. Variable resistor
US5648846A (en) * 1993-10-11 1997-07-15 Muller Bem Apparatus and method for the geometric measurement of a vehicle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970005746B1 (ko) * 1986-12-05 1997-04-19 가부시기가이샤 무라다 세이사구쇼 가변저항기
GB2240885A (en) * 1990-02-08 1991-08-14 Crystalate Electronics Potentiometer connector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924207A (en) * 1974-12-11 1975-12-02 Precision Electronics Componen Variable attenuator apparatus
US4105987A (en) * 1975-12-12 1978-08-08 Plessey Handel Und Investments Ag Potentiometers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1891060U (de) * 1963-09-14 1964-04-16 Preh Elektro Feinmechanik Widerstandskombination mit sehr niedrigem ohmwert.
DE1971609U (de) * 1967-07-14 1967-11-02 Preh Elektro Feinmechanik Drehwiderstand aus zusammensteckbaren bauteilen.
JPS5993103U (ja) * 1982-12-14 1984-06-25 アルプス電気株式会社 半固定可変抵抗器
JPS59186309A (ja) * 1983-04-07 1984-10-23 北陸電気工業株式会社 チツプ形可変抵抗器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924207A (en) * 1974-12-11 1975-12-02 Precision Electronics Componen Variable attenuator apparatus
US4105987A (en) * 1975-12-12 1978-08-08 Plessey Handel Und Investments Ag Potentiometers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785278A (en) * 1986-10-01 1988-11-15 Murata Manufacturing Co., Ltd. Variable resistor
USRE33627E (en) * 1986-10-01 1991-07-02 Murata Manufacturing Co., Ltd. Variable resistor
US5648846A (en) * 1993-10-11 1997-07-15 Muller Bem Apparatus and method for the geometric measurement of a vehicle

Also Published As

Publication number Publication date
ES282760Y (es) 1985-12-01
GB2168541A (en) 1986-06-18
IT8512602A0 (it) 1985-11-19
ES282760U (es) 1985-05-01
GB2168541B (en) 1987-12-16
JPS61166106A (ja) 1986-07-26
KR860004317A (ko) 1986-06-20
IT8515264V0 (it) 1985-11-19
IT1202099B (it) 1989-02-02
FR2573564A1 (fr) 1986-05-23
GB8528338D0 (en) 1985-12-24
FR2573564B3 (fr) 1987-03-20
DE3540893A1 (de) 1986-05-22

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Legal Events

Date Code Title Description
AS Assignment

Owner name: PIHER NAVARRA, S.A., POLIGONO INDUSTRIAL, S/NQ, TU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LOPEZ ARRIAZU, CARLOS;REEL/FRAME:004777/0246

Effective date: 19871009

Owner name: PIHER NAVARRA, S.A.,SPAIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LOPEZ ARRIAZU, CARLOS;REEL/FRAME:004777/0246

Effective date: 19871009

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 19920405

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362